Question

there are four isotopes of sulfur: 1) sulfur-32 95.0% abundance 2) sulfur-33 0.76% abundance 3) sulfur-34 4.22% abundance 4) sulfur-36 0.014% abundance calculate the average atomic mass of sulfur. round to two decimal places. (1 point) 135 amu 33.75 amu 32.09 amu 37.65 amu

Explanation:

Step1: Convert percentages to decimals

$95.0\% = 0.95$, $0.76\%=0.0076$, $4.22\% = 0.0422$, $0.014\%=0.00014$

Step2: Multiply isotope mass by abundance

Sulfur - 32: $32\times0.95 = 30.4$
Sulfur - 33: $33\times0.0076= 0.2508$
Sulfur - 34: $34\times0.0422 = 1.4348$
Sulfur - 36: $36\times0.00014=0.00504$

Step3: Sum up the results

$30.4 + 0.2508+1.4348 + 0.00504=32.09064$

Step4: Round to two decimal places

$32.09$

Answer:

$32.09$ amu